I have read a mention to that in Garou's page but I do not find any page on it in the Wiki.

In the fight against the 8 heros?

Since the crazy cyborg incident happened 4 years ago Genos became a cyborg around that time too, so for once he actually was stronger than Saitama.

I think Nyan might be able to kill Saitama and Dark Shine, if he could manage to get inside them and use feline retribution on their internal organs and brain. Cause their organs are not invincible

Just asking :p